Axiris Arduino Assembly Manual - Page 8

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IV-3 VFD shield for Arduino

Ceramic capacitors

Mount

the

following

capacitors:

C1: 2n2

•

C2, C3: 8n2

•

C4: 100n

•

Please note that the values of

C1...C3 are somewhat critical as

C1 defines together with R5 the

operating frequency of the voltage

tripler and C2, C3 define the

filament

current

tubes.

10K resistors

Mount the 10 kilo ohm resistors

(brown – black – orange – gold)

R6...R18.

Mount them vertically as in the

picture.

68K resistors

Mount the 68 kilo ohm resistors

(blue – grey – orange – gold)

R19...R30.

Mount them vertically as in the

picture.

ceramic

for

the

IV-3

Assembly Manual